March 6th.—The gray vapor had now arisen many more degrees above the horizon, and was gradually losing its grayness of tint. The heat of the water was extreme, even unpleasant to the touch, and its milky hue was more evident than ever. Today a violent agitation of the water occurred very close to the canoe. It was attended, as usual, with a wild flaring up of the vapor at its summit, and a momentary division at its base.